Question

Find the interior angle for an N sided polygon.Also find the sum of all the interior angles.

Answer 1

@Qwertty123

Answer 2

Well, From any one of the vertices, say A1, construct diagonals to other vertices.

There are altogether (n-2) triangles.

Sum of angles of each triangle = 180°

Sum of interior angles of n-sided polygon
= (n-2) x 180°
Or read more.. http://www.qc.edu.hk/math/Junior%20Secondary/interior%20angle.htm